On Tue, Aug 16, 2016 at 07:27:11PM +0200, Felix Natter wrote: > I am the maintainer of a java called freeplane [1], which has an icon > with transparent edges. However, in current Debian unstable, the edges > are no longer transparent in GNOME3's left icon panel. See the green > icon in the attached screen shot.
FWIW, I tried this with Debian testing and unstable, I set freeplane as a favorite to add it to the icon panel / dash, and the icon shows up fine with a transparent background. On both xorg and wayland, if that makes a difference.